-EPA
united states
Environmental protection
Agency :
Cffica of Water ,
Regulations and Standards
Washington, DC 20460
EPA .140,5-38/007
Seotemoer 1988
Bacteria
"> . '
Water Quality Standards
Criteria Summaries:
A Compilation
of State/Federal Criteria
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DISCLAIMER •
+* rc Pub^ication was prepared by Battelle under contract to
rne U.S. Environmental Protection Agency (Contract 68-03-3534)
Secondary information sources were used to compile data presented
in this document. Each State was given an opportunity to -review
and provide comraents-on a draft of this iri-formation document In
no event shall either the United States or Battelle have any
responsibility or liability for any use, misuse, or reliance upon
the information contained herein, nor does either warrant or
otherwise represent in any way the accuracy, adequacy, efficacy
.or applicability of the contents hereof. ^ica.y,
.The reader should consult the water quality standards o* a
particular State for exact•regulatory language applicable to that
!^e' ^C°P'!Vf State water qu*"ty standards, may be obtained
from ^the. State s Water Pollution Control Agency or •< ts
equivalent. . '• , • . .
Additional information may .also be obtained from the:
Standards Branch
Criteria and Standards Division (WH-585)
Office of Water Regulations and Standards
U.S. Environmental Protection Agency
Washington, D.C. 2C460
202-475-7315
This document may be obtained only from the National Technical
Information Service (NTIS) at-the following address:
National Technical Information1Service
5285 Front Royal Road . ,
• • - Springfield, Virginia 22161
. • ' ' 703-487-4650 .
The NTIS order number is: PB89-141394 ,
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INTRODUCTION
This digest
f3^^
individual
is
compiled to provide general information to the public as veil
S1tat6' Snd 10CSl officials' ^'contains excerpts from the
Federal-State vater quality standards establishing pollutant
specific ; criteria for 'interstate surface waters. The vater quality standards
program js implemented by the U. S. Environmental Protection Agency vhere
responsibility for providing vater, quality recommendations, approving
State-adopted standards for interstate vaters, evaluating adherence to the
standards, and overseeing enforcement .of standards compliance, has been
mandated by Congress.
Standards, a nationwide strategy for surf ace' vater quality management, contain
three major elements: the use (.recreation, .drinking vater, fish and wildlife
propagation, industrial, or agricultural) to be made of the navigable vater •
criteria to protect .these uses; and an antidegradation statement to protect
existing high quality vaters, from degradation by the addition of pollutants
Guidance for the development! of standards by individual States is contained in
two EPA documents entitled Water Quality Standards Handbook (1983) and Quality
Fecal coliform bacterial criteria, which are the subject of this digest, are
.set to protect human health from diseases associated vith using contaminated
vater. The risk of waterborne infectio'us diseases to human health is usually
assessed by quantifying the concentration of some indicator microorganism that
indicates the presence of fecal material in the vater. Vaterborne disease is
then defined within the bounds of a concentration of indicator above vhich the
health risk is^ unacceptable high. Bacteria of the fecal coliform group are
considered to be the primary indicators of fecal contamination since they are
usually associated in. high numbers vith the gastrointestinal track and feces
of warm blooded animals.
Though a scientific and direct relationship between the vater quality criteria
for fecal coliform bacteria and microbial disease transferred by direct (i.e
swimming, drinking or shellfish consumption) or indirect (i.e., fishing
cattle watering) is lacking, the epidemiological evidence, though inadequate
in many respects, suggests that some relationship exists. The most supportive
information _ for this relationship is the continued reporting of ,
gastrointestinal diseases in recreational shellfishing areas when bacterial
?™rnn™ T,, a«morVhan the fecal coliform bacteria criteria given in the
1986 QCV. Therefore, fecal coliform bacteria are used 'as an indicator of the
possible presence of pathogens in water and the risk of diseases.
The 1986 Quality Criteria for Vater recommends the folloving:>
- - p
Freshwater Bathing ' ' -
Based on a minimum of five samples taken over a 30-day period, the
geometric mean of the indicated bacterial densities should not exceed one
or the other of the following:
E. coli
enterococci
126 per 100.ml; or
33 per 100 ml.
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Marine Vater Bathing'
Based on a minimum .of five samples taken over a 30-day period the'
.geometric mean of the enterococci densities should not exceed 35 per 100
dX * . • - • ' '
Shellfish Harvesting Waters
The median fecal coliform bacterial concentration should not exceed U'MPN
Per ,i?°-,mi 'Vith n0t more than 10 Percent.of the samples exceeding 43 MPN'
per 100 ml for the taking of shellfish. •
* ' . •
- Only one indicator should be used. The Regulatory agency should select
the appropriate indicator for. its conditions. .,
Since water quality standards are revised- from time to time, follovine
procedures set forth in the Clean Water Act, individual entries in this dieest
may be superseded. This digest vill be updated periodically, Because this
publication is, intended for use only,as a general information reference, the
reader needs to refer to the current approved vater quality standards to
obtain the latest information for special purposes and applications. These can
be _obtained from the State vater pollution control, agencies or the EPA
.Regional Offices.
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REFERENCES
5 California Water Quality Standards by River Basins, ca. 1975
IT
Standards.
rlfeTlo^Car f ^^ "d ^ "
ref er • t0 Calif°mia State Water Quality
11 Havaii Administative Rules. Title TT Ha««,-4 n
Chapter 54: Water Quality Standards? 1988, Department of Health,
" '
20
subtitle
31
33
35
40
43
°Uality
Texas »ater Cession, Rule
46 Virginia Water Quality Standards, State Water Control
48
Board, 1987.
Rules, State Water
51 Water Quality Standards for American Samoa,. 1984, p. 17.
52
53
^-iron.ental
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54 Commonwealth of Northern Mariana Islands Marine and Fresh Water Quality
Standards, Commonwealth Register, Vol. 8 No. 5, 1986, p. 4464.
56 'Marine and Fresh Water Quality Standard Regulations, Trust Territory
Title 63, Chapter 13, Subchapter .VII, 1986, pp. 5-6. '
57 Water Quality Standards for, Coastal Waters of the Virgin Islands Title
12, Chapter 7, Subchapter 186, 1985,'pp. 264-265 + amend.
ENVIRONMENT REPORTER. The Bureau of National Affairs, Inc. Washington, D.C.
1 Pages 701:1004, June 26, 1981, 701:1005-1008, September 5, 1980 *
2 Pages 706:1003-1007, 1011-1012, November 7, 1986
3 Pages 711:1016-1017, 1019, 1021, February 7, 1986
4 -Page 716:1005, August"30, 1985
6 Page.726:1009, August 22, 1986
7 Pages 731:1003-1009, May 14, 1982 '
8 Pages 736:1001, 1007-1009, March 28', 1986
9 Pages 746:1010.3, September 5, 1986, 746:1011-1012, January 21, 1983
10 Pages 751:0504-0505, December 27, 1985
12 Pages 761:1027-1028, 1033, January 23, 1987
13 Pages 766:0505, Q513, March 28, 1986, 766:0508, May 25, 1984
14 Pages 771:1002, 1013-1017, January 10, 1986, 771:1003-1006, August 10,
1984, 771:1007-1009, December 26, 1980
15 Page 776:1005, February 13, 1987
16 Page 781:1012, March 27, 1987
17, Page 786:1009, November 29, 1985
18 Pages 791:1007-1008, January 18, 1985
21'Page 806:1003, June 21, 1985 /
22 Page 811:1004, February 13, 1987
23 Pages 816:1003-1019, June 25, 1982 ,
24 Pages 821:1003-1004, October 25, 1985
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25 Pages 826:1002-1004, May 9, 1986, 826:1005, 1008-1010, June 21, 1985
26 Pages 831:1004-1009, April 19, 1985 ' "
27 Page 836:1003, March 27, 1987 .
28 Pages 841:1001, February 22, 1985, 841:1005, 1008, June 29, 1984
29 Page 846}1004, October 5, 1984
30 Pages 851:1011, 1021-1022, April-11, 1986
32 Pages 8(51:1007-1012, 1035, November 29, 1985
34 Pages 871:1002-1003, June 7, 1985
35 Pages 876:1011, May 24, 1985, 876:1023, December 27, 1985
36 Pages 881:'1003, 1014, September 26, 1986
37 Pages 886:1006-1046, May 9, 1986
38 Page 891:1005, August 9, 1985
39 Pages 901:1002, 1004, August 9, 1985
41 Pages 911:1005-1006, March 22, 1985
42 Pages 916:0542-0544,.September 7, 1984
45 Page 931:1006, March 22, 1985
47 Pages 941:1003-1005, October 21, 1983 ."
49 Pages 951:1002, March 13, 1987, 951:1011, August 10, 1984
50 Page 956:1006, July 5, 1985
55 Pages 896:1003-1004, December 23, 1983
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State and Vater Use
Bacteria Criteria Values
Alabama
Public Vater Supply
Swimming and o ther
Whole Body Water-
Contact Sports
Shellfish Harvesting
Fish and Wildlife
Bacteria of the fecal- coliform group shall not exceed
a geometric mean of 2,000/100.ml; nor exceed a maximum
of 4,000/100 ml in any sample.
The geometric mean shall be .calculated from no less
than five samples collected at a given station over a
30-day period at intervals not less than 24 hours.
The membrane filter counting procedure will be
preferred, but the multiple tube technique (five-tube)
is acceptable, , - - .- • —
Waters in the immediate vicinity of discharges of
.sewage or other wastes likely to contain bacteria
harmful to humans, regardless^ of the degree of
treatment afforded . these wastes , are not acceptable
for swimming or other whole body water-contact sports.
In all other areas, the bacterial quality of water is
acceptable when a sanitary survey reveals no source of
dangerous pollution and when the geometric mean fecal
coliform organism density does not exceed 100/100 ml
in coastal waters and 200/100 ml ' in other waters.
When the geometric mean fecal coliform organism
density exceeds these, levels,, the bacterial water
quality shall be considered acceptable only if a
second detailed sanitary survey and evaluation
discloses no significant public health risk in. the use
of the waters. , . •
* - . , •. •
- NOTE: In assigning this classification to waters
intended for swimming and water-contact sports, the
Commission will take into consideration the relative
proximity of discharges of wastes and will recognize
the potential hazards involved in locating swimming
areas close to waste discharges. The Commission will
not assign „ this classification .to waters, the,
bacterial quality of which .is dependent upon adequate
disinfection of waste and where the interruption of
such treatment would render the water unsafe for
bathing. '- •
Not to exceed the limits specified in the latest
edition of the National Shellfish Sanitation Program
Manual of Operations, Sanitation of Shellfish Growing
Areas, published by EPA (USPHS).
Bacteria of the fecal coliform group shall not exceed
a geometric mean 'of 1,000/100 ml on a monthly average
value; nor exceed a maximum of 2,000/100 ml in any
sample. '. ,
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State and Water Use Bacteria Criteria Values
Alaska^
I. Fresh Water
(A) Vater Supply
(see Note 1)
vhen using the fecal coliform MPN technique
samples shall exceed 400 FC/100 ml. For products not
normally cooked and for dairy san?tatJ^S ™f
unpasteurized products, the criteria for drinking
vater supply l(A)(i) shall apply. arimcing
(iii) Aquaculture For < products normally cooked the mean, based on a
minimum of 5 samples taken in a period of 30 days,
shall not exceed 200 PC/ 100 .ml and not more than 10*
• or the samples shall exceed 400 FC/100 ml. For
products not normally cooked the criteria for drinking
- vater supply l(A)(i) shall apply. . "?rimcinS
(iv) Industrial,
Incl.Any Water Supplies
Used In Association
With A Manufacturing
Or Production Enter-
prise (other than Food
Processing), Incl.
Mining, Placer Mining,
Energy Production Or
Development
(B) Water Recreation
(i) Contact
Recreation
-,n , . , -«-.--- -r —......um ^i. j iaiu^Aes -i.aK.en
30 day period, shall not exceed 200 FC/100 ml, not
more than 10* of the samples shall exceed 400 FC/100
ml.
Based on a minimum of 5 samples taken in a 30 day
period, the mean shall not exceed 20 FC/100 ml, and
than 10* °f the total samples shall exceed 40
ml.
(ii).Secondary
Recreation
Based on a minimum of 5 samples taken in a 30 day
period, -the. mean shall not exceed 200 FC/100 ml, and
'i?3" 10% Of the total samples shall exceed
ml.
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State and ¥ater Use
(C) Growth and
Propagation Of Fish;
Shellfish, Other
Aquatic Life, And
Wildlife Including
Waterfowl And
Furbearers
II. Marine Water
(A) Water Supply
(i) Aquaculture
(ii) Seafood
Processing
Bacteria Criteria Values
Not applicable.
(see Note 1)
For products normally cooked the mean, based on1 a
minimum of 5 samples taken in a period,of 30 days,
shall not exceed 200 FC/100 ml and'not more than 10*
exceed 400 FC/100 ml.- For
cooked the mean, based on a
taken in a period of 30 days,
shall not exceed 20 FC/100 ml; and riot more than 10X
of the samples shall exceed 40 FC/100 ml.
exceed
of the samples shall
products, , not normally
'minimum of 5 samples
Based on a minimum of 5 samples taken in a period of
30. days, mean shall not exceed 20 FC/100 ml, and not
more than 10* of the samples shall exceed 40 FC/100 ml.
(iii) Industrial, Same as
Incl.Any Water .Supplies
Used In Association
With A Manufacturing Or '
Production Enterprise
(other than Food Pro-
cessing) Incl. Mining,
Placer Mining, Energy
Production Or Develop-
ment . ' ' . •
(B) Water Recreation
(i.) Contact
Recreation
( i i) Secondary
Recreation
Same as I(B)(i).
Same as I(B)(ii).
(C) Growth And Propa- Npt applicable
gation Of Fish, Shell-
fish, Aquatic Life And
Wildlife Including Sea-
birds, Waterfowl And
Furbearers
(D) Harvesting For
Consumption Of Raw
Mollusks Or Other Raw
Aquatic Life
Based on a 5-tube decimal dilution test the fecal
coliform median MPN shall not exceed 14 FC/100 ml, not
more than 10% of the samples shall exceed a FC '.MPN of
43 FC/100 'ml. (see Note 2) ' ' .
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State and Water Use Bacteria Criteria yai..».
ilter nique
Environmental Protection Agency (EPA).
-; on' -. Department
vhich can be examined in any office of the
governor " °B fUe in the °ffice of the
Arizona
Domestic Vater Source
Full Body Contact
Incidental BXiman Contact
Aquatic and Vildlife
Agricultural Irrigation
Agricultural Livestock
Watering
Geometric Mean
(5 sample min.)
1000
200
1000
1000
'1000
1000
10* of Samples
for 30 day period
2000
.400
2000
2000
2000
2000
Single Sample
4000
800
4000
4000
4000
' 4000
West Fork of the
Little Colorado
River above
Government Springs
Oak Creek and Its
West Fork
[Colony-Forming Units (CFU/100 ml)]
200 cfu/100- ml single sample maximum allowable
800 cfu/100 ml single sample
150 cfu/100 ml geometric mean (random set of a minimum
ot ten samples in any calendar month)
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State and Water Use
All Effluent
Dominated Waters
.Bacteria Criteria Values
1000 cfu/100 ml geometric mean
.2000 cfu/100,ml 10* of samples
4000 cfu/100 ml single sample
Arkansas
All • The Arkansas • State Board of . Health has the
responsibility of approving of disapproving surface
waters -for public water .supply and of approving or
. disapproving the suitability . .of specifically
^ delineated outdoor bathing places for body contact
recreation, and it has issued rules and regulations
' pertaining to such uses.. .%
This Regulation No. 2 applies to all other waters and
all : other • vater uses. For the purposes of this
• • regulation, all •' streams shall be designated for
'primary contact unless and until a use attainability
analysis has been conducted pursuant to Section 4(F).
The determination "of fecal coliform levels for the
following waters shall ' be based on a minimum of not
' less than five samples taken, over not more than a
30-day period. ' ' . . x .
Waters of Extraordinary The fecal coliform content-shall not be raised above
Recreational and natural background levels. At no time.shall the fecal
Aesthetic Value and coliform content exceed a geometric mean of 200/100 ml.
ONRW "••'•.-..
Primary Contact Waters
Secondary Contact
Between April 1 and September 30, the fecal coliform
content shall not exceed a geometric mean of 200/100
ml nor shall more than 10 percent of the total samples
during any 3.0-day period exceed 400/100 ml. During
the remainder of the calendar year, these criteria may
be exceeded, but at no time shall the fecal coliform
content exceed the level' necessary to support
secondary contact recreation (below).
The fecal coliform content shall not exceed a
geometric mean .of 1000/100 ml, nor equal or exceed
2000/100 ml in more than 10 percent of the samples
taken in any 30-day period. . , , >
California3
(1A) Klamath River Basin
(IB) North Coastal Basin
The bacteriological quality of waters of the north
coastal region shall not be 'degraded beyond natural
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State and ffater Use Bacteria Criteria
(2) Basin
sh°any Peri°dh Sha11 n°< ^ ^^ 060 S: nor
shall more than 10* of total samples during any
30-day period exceed 400/100 ml. Curing any
At all areas vhere shellfish may be harvested for
col??cirmCOnSUraPti0n (SHELL)'
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State and Vater Use
(3) Central Coastal
Basin
(4A) Santa Clara River
Basin
Bacteria Criteria Values •
In nontidal waters used for domestic drinking•water
supply CHUN), the arithmetic average of at least-5
samples collected 'over a 30-day interval shall not
exceed a total coliform concentration of 100 per 100
ml or a fecal coliform of 20 per 100 ml.
Objectives for inland surface waters, enclosed bays
and estuaries.
In waters designated for contact recreation (REC-1)
the fecal coliform concentration, based on a minimum
of not less than 5 samples for any 30-day period,
shall not exceed a log mean of ZOO/100 ml, nor shall
more than 10% of. total samples during - any 30-day
period exceed 400/100 ml.
In waters •designated for noncontact recreation (REC-2)
and not designated'for contact recreation ("REC-1), the
fecal coliform concentrations based on a minimum of
not less than 5 samples for any 30-day period shall
•not exceed a kg mean of 2,000/100 ml, nor shall more
"than 10% of samples collected during any 30-day period
exceed 4,000/100 ml. . .
'At all areas where shellfish may- be harvested for
human consumption (SHELL), the-median total coliform
concentration, throughout the water column for any
30-day period shall not exceed 70/100 ml, nor shall
more than 10% of the' samples 'collected during,any
30-day period exceed 230/100 ml for a 5-tube decimal
dilution test or 330/100 ml when:' a 3-tube decimal
dilution test is used.
(Same as 3)
(4B) Los Angeles River
Basin
Objectives for inland surface waters, enclosed bays
and estuaries.
In waters, designated for contact recreation (REC-1),-
the fecal coliform concentration based on a minimum of
not less than 5 samples for any 30-day period, shall
not exceed a log mean of 200/100 mi, nor shall more
'than 1QZ of total samples during any 30-day period
exceed 400/100 ml.
In waters designated for noncontact recreation (REC-2)
and not designated for contact recreation (REC^l) th.e
average fecal coliform , concentration for any 30-day
period shall not exceed 2.000/100 ml nor shall more
than 102 of samples collected during any 30-day" period
exceed 4,000/100 ml.
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State and gater ns». Bacteria Cri teria
°
dilution test or 330/inn
dilution tes? is Led
ml
a 3-tube
-
-
cimal
rs=
in Los
(5A,B,C) Sacramento-
San Joaquin Delta
water bodies
any a
The follpvins objective applies to the vater body
Folsom Lake
(5D) Tulare Lake Basin
(6A) North Lihontan
Basin
S. leS coHfSnated f°r C°ntact rec^ation (REC-1),
not less thin f C°nf nt^ation ba^ on a minimum .of
noc less th 5 samples for any 30-day period '
:re;,rjc,nean 1 2oo/io° ^ »'
period exceed 00/100 ml Sa"PleS dUri"S ">- 30-d.y
(Same as 1A -.REC-1)
Waters shall not contain concentrations of coliform
organisms attributable to human wastes. Al™ in
coli gnatSd f°r C°ntaCt rec^tion (REC- C
than mCOnentti0n baSed °n * minim^ of not
"
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State and Vater Use
Bacteria Criteria Values ,
10* of total samples during any 30-day period exceed
400/100 ml, with the following exceptions:
Eagle Lake
Susan River
Lake Tahoe , .
Truckee River -
East Fork Carson' River
West Fork Carson River
East Walker River
West Walker River ' '
Lake Topaz
Bryant Creek , '
The fecal coliform concentration for these waters and
their tributaries, based on a minimum of not less than
5 samples for any 30-day period, shall not exceed a
log mean of 20/100 ml, : nor shall more than 10* of
total samples during any' 30-day period exceed 40/100
ml. ..'••:.-
(6B) South Lahontan
Basin
(7A) Vest Colorado
River Basin
In waters designated for noncontact recreation (REC-2)•
and not designated for contact recreation (REC-1), the
average fecal coliform concentration for any 30-day
period shall not. exceed 2,000/100 ml nor shall more
than 10* of samples collected during any 30-day period
exceed 4,000/100 ml.
Waters shall not contain concentrations of coliform
organisms attributable to human wastes. Also, in
waters designated for contact recreation (REC-1) •, the
fecal coliform concentration based on a minimum of not
less than 5 samples for any 30-day period shall not
exceed a . log mean of 200/100 ml, nor shall more than
10* of total samples during any 30-day period exceed
400/100 ml.
In waters designated for noncontact recreation (REC-2)
and not designated for contact recreation (REC-1), the
average /fecal coliform concentration for any 30-day
period shall not exceed 2,000/100 ml nor shall more
than 10*. of samples collected during any 30-day period
. exceed 4,000/100 ml.
In waters designated for contact recreation (REC-1),
the fecal coliform concentration based on a minimum of
not less than 5 samples for any 30-day period shall
not exceed a log mean of 200/100 ml, nor shall more
than 10* of total samples during any 30-day period
exceed 400/100 ml. These bacteriological values are
to be "used as maximum allowables for the purpose of
upgrading the bacteriological quality o:f those REC 1
waters whose fecal coliform levels are generally in
excess of the above as of the effective date of this
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State and VTaterJJse ' Bacteria_Criteri
a Values
""*1* shaU ' >>'
(7B) East Colorado
River Basin
(8) Santa Ana River
Basin
C°ntact
than 10X of
(REC-1)
sha11
.
"
1. Bacteriological Characteristics
Riv^r tidal Pr?S\ ?PPSr uand L°Ver; and Sw- Gabriel-
Creek): between Marina Drive to above Coyote
e
per
not more than IG% of the
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State and Water Use
Bacteria Criteria Values
samples shall exceed 230 per ml fpr a 5-tube decimal
"dilution test or 330 per 100 ml, where the 3-tube
decimal dilution test is used.
b. Vithin bay and tidal prism waters in
water-contact sports areas (includes Sunset Bay;
Huntington Harbor: Bolsa Bay; Newport Bay, Upper and
Lower; and Tidal Prisms: Santa Ana River; Newport
Shores Marina, South of Highland Street; and San
Gabriel River, between mouth and Marine Drive), the
following bacteriological water quality objectives
shall be maintained through the water column:
:' (1) Samples of water from each sampling
station shall have a concentration of coliform
organisms less than 1,000 per iOO ml (10 per ml),
provided that not more than 20% of the samples at any
sampling station in any 30-day period, may exceed
1,000 . per 100 ml (10 per- ml), and provided further
that no single sample when verified by a repeat sample
taken within 48 hours!shall exceed 10,000 per 100 ml
(100 per ml); and '
(2) Fecal coliform concentrations based on a
.minimum of not less than 5 samples for any 30-day
period, shall not exceed a log mean of '200 per 100 ml
nor shall the fecal coliform concentration of more
than 10% of the total samples during any 30-day perriod
exceed. 400 per 10Q ml (as determined by multiple,tube
fermentation procedure).
c. Inland Surface V/aters
(1) For all waters which are a direct source
for municipal or domestic supply the concentration of
coliform organisms shall be less than 100 per 100 ml.
(2) For all waters designated for beneficial
use REC-1 (Water Contact Recreation) the recreation of
fecal coliform organisms, based on a minimum of not
less than five samples for any 30-day period, shall
not exceed a log mean of 200/100 ml nor shall more
than 10% of the total samples during any 30-day period '
exceed 400/100 ml. .
(3) For all waters designated for beneficial
use REC-2 - (Npn Body Contact Recreation) the average
fecal coliform concentration for any 30-day period
shall not exceed 2,000/100 ml nor shall more than 10%
of samples collected during any 30-day period exceed-
4,000/100 ml. v- •
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State and Vater Use Bacteria Criteria
(9) San Diago Basin
j 7~ total samples duriner anv in j-.. .. _ ,
exceed 400/100 ml.
desiSnated for noncontact recreation
2}
any 30-day
exceed 4,000/100 ml.
At all areas vhere shellfish may be harvested for
human consumption (SHELL), the median total "oliff™
I
Ocean Plan:
shall be less than 1,000 per 100 ml nn n
ml), provided that not more than,20X of the samp^s at
' " "
that noin t
taken^yithin 48 hours shall exceed lo'oOOpe'r 100 (!LOO
f? h
Vhere bay vaters a« used for vhole
°f E' Coli sha11 »« «c ed
bay
1. Vithin a zone bounded by the
' feet
23-
u
SamPles. of vater from each sampling station
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State and Water Use
Bacteria Criteria Values
per ml)', and provided further that no single sample
vhen verified by a repeat sample taken vithin 48 hours
shall exceed 10,000 per 100 ml (100 per ml).
Colorado
Primary Contact '
Recreation
Secondary Contact
Recreation
Domestic Water Supply
(Class 2)
Fecal Coliforms per 100 ml (Geometric mean):
200 ~
2000
2000 ,,
- Fecal coliforra, is an indicator only. ' It may
indicate the presence of pathogenic organisms;
however, fecal coliform counts from agriculture or
urban runoff may-not indicate organisms detrimental to
human health. The bacteria standard is based on
geometric mean of representative stream samples.
Connecticut
Inland Waters
Classes AA & A
Class B
Class C
Criteria - Fecal coliform shall not exceed an
arithmetic mean of 20 organisms/100 ml in any group of
samples nor shall 10% of the samples exceed 100
organisms/100 ml. - .
Guide - Total coliform not to exceed a median o£ 100
nor shall 10£ of the' samples exceed 500 organisms/100
ml.
Criteria - Fecal coliform shall not exceed a log mean
of 200 organisms/100 ml nor shall 10% of the samples
exceed 400 organisms/100 ml. ,
Guide - Total coliform not to exceed a median of 1,000
nor shall more than 20% of samples exceed 2,400
organisms/100 ml. :
Criteria - Fecal coliform shall not exceed a log mean
of 1,000 organisms/100 ml nor shall 10% of the samples
exceed 2,500 organisms/100 ml._
Guide - Total coliform not to exceed mean of 5,pOO
organisms/100 ml nor shall 20% of samples .exceed
12,500 organisms/100 ml.
Coastal' & Marine Waters
Class SA
Same as Inland Waters Classes AA & A.
-19-
-------
State and Water Use Bacteria Criteria
Class SA, Shellfish
Harvesting
Class SB
Class SC
Groundvaters
Classes GA "& GAA
All-
Fecal coliform shall not exceed a .median of U
* "" Sha
,3
exceed 23°
no°r
organisms/100 ml.7
Same as Inland Waters Class B.
Same as Inland ,Vaters Class C
Not to exceed.a monthly arithmetic mean of 1, or more
than 4 in any individual sample collected, (per 100
Section 25-26(a) of the Connecticut General Statutes
imposes an absolute restriction on the dischlrze If
sevage to Class AA surface waters. ?Je coli'orm
C 1 crlteria °f "^ne of human ™
C°™ecticut to
t
protection of drinking water supplies in SonS«"ut.
for
to h
30 day
of confidence,
bacteria and fecal coliform are
°f fiVe SampleS taken
J°7criteria f°r coliform bacteria, another
.5
are considered non-pathogenic. Vhat makes the FC/FS
th r.S "f , the faCt that the reS6arch has shov"
rati« fn !n VaSteS t0 b? about 4'4 and the
l!« ^^ ^r011 domestic animals to be considerably
less than 1.0. The rates of die-off for coliform and
streptococci organisms is different and therefore ?he
l!«°m1S -^T mea"inSful vhen the contamination is
less than 24 hours old.
Jhe following ratios' can be used as a useful 'tool
in interpreting data for which both Fecal Coliform and
fecal Streptococci values exist:.
-20-
-------
State and Water Use
Bacteria Criteria Values
FC/FS Ratio
Significance
greater than 4.0 Strong evidence that pollution is
from human wastes
between.2.0 and 4.0 May suggest a predominance' of
'-'. human waste in mixed pollution
between 1.0 and 2.0 Uncertain interpretation
between 0.7 and 1.0 May suggest a predominance of
. . livestock and poultry wastes in
mixed pollution
less than 0.7
Strong evidence ,that pollution is
from livestock and poultry waste
and not human wastes
Delaware
General Stream Criteria All surface waters of the State shall be free from
. substances attributable to wastes of industrial,
municipal, agricultural or other anthropogenic origin,
. . such as any pollutants, including those of -a
bacteriological nature, that may interfere with
' ... attainment of designated uses of the water, impart
undesirable odors, tastes, or colors to the water or
, to aquatic, .life found therein, endanger public
health, or result in,dominance of nuisance species.
Stream Quality Criteria Enterococcus Colonies/100 ml:'
(General Criteria For Geometric average of a representative group of samples
Freshwater Streams) not to exceed 20/100 ml. At any time, the maximum
value should not exceed 67/100 ml.
Stream Quality Criteria Enterococcus Colonies/100 ml:
(General Criteria For Geometric average of a representative group of samples,
Saltwater Streams) , 'not to exceed 9/100 ml. At any time, the maximum
' -value should not exceed 23/100 ml.
Harvestable Shellfish
Waters
Total Coliform MPN/100 ml: , ,
The coliform median MPN of-the water shall not exceed
70/100 ml, nor shall more than 10% of the samples have
an MPN in excess, of 330/100 ml for a 3 decimal
dilution test (or 230/100 ml where the'5 tube decimal
dilution test is used). These criteria shall be
verified through sampling of those portions of the
shellfish area most probably exposed to fecal
contamination, for those tidal and climatic conditions
most likely to result in contamination of the
shellfish area. .
-21-
-------
State and Water Use Bacteria_CriteriaValues
Delaware River (PA-DE
line, above RH 59.5)
Delaware River (PA-DE
line, below RM 59:5)
Fecal coliform Colonies/100 ml.-
Based on a minimum of not less
770/100 ml
Fecal coliform Colonies/100 ml:
Based on- a minimum of not les
-------
State and Vatef Use
Bacteria Criteria Values
Recreation
Fecal coliform not to exceed a geometric mean of:
I. Coastal. Waters - 100/100 ml
II. All other recreational vaters - 200/100 ml
III. Should wafer quality and sanitary studies'show
natural fecal coliform levels exceed 200/100 ml
(geometric mean) occasionally in high quality
recreational vaters, then the allowable geometric .mean
fecal coliform level shall not exceed'300/100 ml in
lakes and reservoirs and 500/100 ml in free flowing
fresh vater streams.
The geometric mean will be used as the method of
•criteria, expression. This technique will be applied
to no less than four samples collected from a given
sampling site over a 30-day period ar intervals not
less than 24 hours.
Fishing, Propagation Fecal coliform not to exceed a geometric mean of '..
of Fish, Shellfish, 1,000/100 ml based on at least four samples taken over
Game And Other Aquatic a 30-day period and not to exceed a maximum of
Life. 4,000/100 ml. ,
(Applicable only to waters designated as approved
shellfish harvesting waters by the appropriate State
agencies). The requirements will be consistent with
• • those established by the State and Federal agencies
responsible for the National Shellfish Sanitation
Program. ,
Agricultural
Navigation
Urban Stream
Fecal coliform not to exceed a geometric mean of
5,000/100 ml based on at least four samples .taken over
a 30-day period.
Fecal coliform not, to exceed a geometric mean of
5,000/100 ml based on at least four samples taken over
a 30-day period. "
Fecal coliform not to exceed a geometric mean of
2,000/100 ml based on at least four samples taken over
a 30-day period and not to exceed a maximum of
5,000/100 ml. .
Havaii11
Recreational Areas
Cri'teria in inland waters;
Fecal coliform content shall not exceed a geometric
mean of two hundred per on hundred milliliters in ten
or more samples collected during any thirty day period
and not more than -ten percent of the samples shall
exceed four hundred per one hundred milliliters in the
same period.
' -23- . ' .-•
-------
State and gater Use Bacteria_Criteria Values
Idaho12
Primary Contact
Recreation
Secondary Contact
Potable ttater Supply
Disinfection of Sewage
Vastevater Treatment
Plant Effluents
Raw
of
director
public
health
or other pollutants
as
Criteria in marine waters-
HI 'r «
a. 500/100 ml at any time; 'and
not
.- to
exceeding:
•' a. 800/100 ml at any time; and
«mn ml in m°re than 10* '«>« the total
samples taken over a 30 day period; and
c. A geometric mean of 200/100 ml based on a
period!" 5 Sampl6S tSken °Ver a 30
C9UBt
Sewage was tewater treatment plant effluents must
ade^\te disinfection by any disinfection
whach at some location in that process
-24-.
-------
State and Vater Use
Bacteria Criteria Values
satisfies the following applicable criteria, prior to
discharge to any receiving watercourse. >, ,
\
a. Fecal coliform concentrations in secondary treated
effluents (as.determined by multiple-tube fermentation
.or membrane filter procedures) must not exceed a
geometric mean of 200/100 ml based on no more than one
week's data and a minimum of 5 samples.
i.' The samples must be representative of all
samples collected during the week; and
ii. Geometric mean computations
calculated and recorded weekly.
must
be
b. On an interim basis, pending the addition of
secondary treatment, primary effluents .must contain
fecal coliform concentrations (as determined by
multiple-tube fermentation or' membrane filter
procedures) not exceeding a. geometric mean of 400/100
ml with no more than 1 sample per week exceeding
1,000/100 ml, based on no more than one veek's data
and a minimum of 5 samples.
i.
The samples must be: representative
samples collected during the week; and
of all
ii. Geometric -mean computations
calculated and recorded weekly; and
must
be
iii. This discharge coliform level will not be
permitted even on an interim basis where the
coliform receiving water quality standard is -not
being met.
Illinois
13
General Use
Lake Michigan
Effluent Standards
Based on a minimum of five samples taken over not more
than a 30 day period, fecal coliforms shall not exceed
a geometric mean of 200/100 ml, nor. shall more than
10X of the samples during any 30 day period exceed
400/100 ml.
•'. . - • '
Based on a minimum of five samples taken over not,more
than a 30-day period, fecal coliform shall not exceed
a geometric mean of 20/100 ml.
No effluent governed by this Part which discharges to
general use waters shall exceed 400 fecal coliform per
100 ml. .
-25-
-------
State and ffater Use
Indiana14
Recreational Uses
Potable Supply
Bacteria_CriteriaValue
count) shall no exced
la
-------
State and Water Use Bacteria Criteria Values
Lake Michigan and Con-
tiguous Harbor Areas
Grand Calumet River;
Indiana Harbor
The fecal coliform content for Whole Body Contact
recreation shall not exceed 200/100 ml as a monthly
geometric mean based on not less- than 5 samples per
month; nor exceed 400/100 ml in more than,10* of all
samples taken during a month (MPN 'or MF count/100 ml).
The fecal coliform content in the open water of Lake
Michigan shall not exceed a geometric mean of 20/100
ml.
The fecal coliform bacteria content (either MPN or MF
count) shall nbt exceed a geometric mean of 1,000/100
ml, nor exceed 2,000/100 ml in more than ten percent
of the samples, except during periods of stormwater
'runoff. ..... . '
Natural Spawning, (A) (i) All waters listed in subsection (a) of this
Rearing or Imprinting section are designated for Whole-Body Contact
•Areas; Migration Routes Recreation. Fecal coliform bacteria (either MPN or MF
for Salmonid Fishes count) shall not exceed 200/100 ml as a geometric mean
• . - . based on not less than five samples per 4-week period
nor exceed 400/100 ml' in any'one sample during the
recreational season, which is defined as the months of
April through' October, inclusive. During the
remainder of the year, subparagraph (ii) shall apply.
(ii) At times other than the recreation season,
-. ' . these waters shall be designed for Partial-Body
Contact. Fecal coliform bacteria (either MPN or. MF
count) shall not exceed 1,000/100 ml as a geometric
mean based on not less' than five samples per 4-week
period nor exceed 2,000/100 ml in'any one sample at
all times of the year. .
(B) Exceedances of the standards established by
paragraph (A) of this, subsection shall not be
considered violations of 330 IAC 2-9 under the
,, following circumstances:
(i) the exceedances occur in these waters at
times other than the recreational s.eason; and
(ii) The exceedances are caused -by., municipal
combined .sewer overflows which result from
precipitation events.
(C) Additionally,. the board may waive the
. , . , applicability of the standards set forth in paragraph
(A) of this subsection to specific whole body-contact
recreational waters during the recreational season
' with respect to exceedances caused by rrunicipal
'• combined sewer , overflows which 'result from
-27-
-------
State and Water Use
ggcteria_criteria Valno,'
precipitation events if they la
hours after the cessation of the
and occur no more than 10* of the
recreational season. 6
n° " m'ore than 24
tation event
' durinS any one
lova
All
15
Primary Contact
fecal
the Caters are .aeriany0^^1,00 ^/«c.pt vhen
but in no case shall fecal *r«??J ? surface runoff;
from a discharge vhich may conta^oa I?*1* dovnsc^
be more than 200 organLms/lSo m? ^uS t0 humans
background level us ' ' th"
vaters are
ntent
'ex«pt vhen the
16
Kansas
Contact Recreation
Noncontact Recreation
sample. The calculaton
tl»n five samples t
periods over not more
than lor of total
period shall exceei i
•!
200/WO
based °" "°<
« o Separate 24
yperi°d' No •">«
*"*
Kentucky
17
Supply
Primary Contact
Recreation Waters
"1 (geometric
f GC3.1 f^oT T ff\v-4Vr
per 100 ml as am rhl exceed 200, colonies
less than 5 samples oer mL^™*^* mean based on —
Per 100 ml in more than 20r°r fX°?fd 4°° Colonies
S?^,^^^-""^^.--1'*-
Secondary Contact
Recreation Waters
-28-
-------
State and Vater Use
Bacteria Criteria Values
less than 5, samples • per month,; nor exceed 2000
colonies per 100 ml .in more than 2QX of all samples
taken during the month.
Louisiana
All
18
Primary Contact
Recreation
Secondary Contact
Recreation
Public Water Supply
Shellfish .Propagation
The bacteria criteria applicable to a particular
stream segment depend upon the use designation of.that
individual stream segment. Limitations are placed on
either the most probable number (HPN) fecal or total
coliform concentration or a combination of both in
order to achieve the stream sanitary, quality required
for the most- restrictive designated use'classification.
.• The tables in this document listing applicable
criteria for each individual Louisiana stream segment
designate one of the following four criteria as
applicable according to present and/or anticipated
water usage of the segment: ' .
Based on a minimum of not less than 5 samples taken
over • not more than a 30-day period, the fecal coliform
content shall not exceed a log mean of 200/100 ml nor
shall more than 102 of. the total samples during any
30-day period exceed 400/100 ml.
Based on a minimum of not less than 5 samples taken
'over not more than a 30-day,period, the.fecal coliform
content shall not exceed a log mean of 1,000/100'ml
nor shall more than 10Z of the, total samples during
.any 30-day period equal or exceed 2,000/100 ml.
The' monthly arithmetic mean' of total coliform most
probable number (MPN) shall not exceed 10,000/100 ml,
nor shall the monthly arithmetic mean . of fecal
coliforms exceed 2,000/100 ml. .
The fecal coliform median MPN shall not exceed 14
fecal coliforms per 100 ml., and not more than 10% of
the samples shall ordinarily exceed an MPN of 43/100
ml. for a five-tube decimal dilution test in those
portions of the area most probably exposed to fecal
contamination, during the most unfavorable hydrographic
and pollution conditions.
Maine19
Fresh Surface .Waters
Classes AA and A~
Class B
Bacteria content shall be as'naturally .occurs.
Between May
Escherichia
waters may
15th and September 30th; the, number of
coli bacteria of human origin in these
not exceed a geometric mean of 64 per 100
-29-
-------
State^nd_VaterUse
Class C
instant— us level of 427 per 100
nu 30th' the
milliliters.
n 2
insta'tane°«s level of 949 p'er }-§§
Lakes and 3?onds
Class GPA
Estuarine and Marine
Waters . '
Class SA
Class SB
The number of Escherichia coli
Bacteria content shall be
as naturally occurs
of
Class SC
or other Inecified TS*" '^ C°lif0rm bacteria
representatiJr of m lndlcator organisms in samples
States Food and Drug
Maryland20
Class I Vaters: Water
Contact Recreation,
Aquatic Life, and
Vater Supply
h
„ ff^ S°UrCeS of Path°^nic or harmful
u ffl"ent Entities to constitute a
^
-30-
-------
State and Water Use
Class II Waters:
Shellfish Harvesting
Class III Waters: "
Natural Trout Waters
Class IV Waters:
Recreational Trout
Waters
Bacteria Criteria Values
(i) If the fecal coliform density exceeds a log
mean 'of 200/100 ml, based on a minimum of not less
than five samples taken over a 30-day period; or
(i'i) If 10* of the total number of samples taken
during any 30-day period exceed 400/100 ml; or
(iii) Except vhen a sanitary survey approved by
the Department of the Environment discloses no
significant health hazard, (i) and (ii) do not apply.
There may not be any pathogenic or harmful organisms
in sufficient quantities to constitute a public health
hazard in the use of vaters for shellfish harvesting.
A public health hazard will be presumed: "
(i) If . the most probable number (MPN) of fecal
coliform organisms exceeds a median concentration of
14 MPN per 100 ml;
(ii) If more than 10* of the samples taken exceed
43 MPN per -100 ml for a 5-tube decimal dilution test
or 49 per 100 ml for a 3-tube decimal dilution test;
(iii) Except vhen a sanitary survey approved 'by
the Department of the Environment discloses no
significant health hazard, (i) and (ii) do not,apply.
Same as Class I vaters.
Same as Class I vaters.
Massachusetts
Inland Waters
Class A"
Class B -
21
Class C
Total coliform bacteria shall not exceed a log mean
for a set of samples of 50/100 ml during any monthly
sampling period.
Fecal coliform :bacteria shall not exceed a log mean
for a set of samples of 200/100 ml, nor shall more
than 10* of the total samples exceed 400/100 ml during
any monthly,sampling period, except as provided in 310
CMR 4.02(1).
Fecal coliform bacteria shall not exceed a log mean
for a set of samples of 1000/100 ml, nor shall more
than 10* of the total samples exceed 2,500/100 ml
during any monthly sampling period, except as provided
in 310 CMR 4.02(1).. •
. -31- ' •
-------
State and ?ater Use Bacteria Criteria Values
Coastal and Marine Waters '', '
ClaSS SA •" Tontal C21"°rm ^cteria shall not exceed a, median
value of 70 MPN per 100 oil and not more than 10* of
the samples shall -exceed 230 MPN per 100 ml in any
monthly sampling period. y
Class SB
Class SC .
Total colif.orm bacteria, shall not exceed a median
value of 700 MPN per 100 ml .and not more than 20X of
the samples shall exceed 1000 MPN per 100 ml durinr
safflPlin& Period, except as provided in. 310
Fecal colifo.rm shall not exceed a log mean for a set
of samples of 1000 MPN per 100 ml, nor shall more than
iu* of the total samples exceed 2500 MPN per 100 ml
?7?n ^/no^ samPlinS Period, except as provided
in Jiu LnK 4.02(1).
Michigan
All
22
R 323.1062. Microorganisms. Rule 62,
A1innWat!rS of the state shall contain not more
than 200 fecal coll form per ..100 ml. This
concentration may be exceeded if such concentration is
due to uncontrollable non-point sources. The
commission may suspend this rule from November 1
through April 30 upon determining that the designated
uses will be protected. -
(2) Compliance vlth the fecal coliform standards
prescribed by subrule (1) of this rule shall be
determined on the basis of the geometric average of
any series of 5 or more consecutive samples taken over
not more than a 30-day period.
(3) Protection of the waters of the state designated
for total body contact recreation and 'public vater
supply source by the vater quality standards
prescribed by this rule may be subject to temporary
interruption during or following flood conditions,
accidents, or emergencies "which affect a sever or
vastevater treatment system. In the event of such
occurrences, notice shall be served to those affected
in Accordance vith procedures established by the
commission. Prompt corrective action shall be taken
by the discharger to restore the. designated use.
-32-
-------
State and Water Use
23
Minnesota
Effluent Limitations
(Secondary Treatment
Facilities)
Domestic Consumption
after disinfection
(Classes A, B, 4 C)
Fisheries & Recreation
(Class A)
Fisheries & Recreation
(Classes B & C)
Limited Resource Value
Waters
Bacteria Criteria Values
Fecal coliform group organisms - 200 organisms/100 ml
Disinfection of vastevater effluents' to reduce the
levels- of fecal 'coliform organisms to the stated value
is required from March 1 through October 31 (Class 2
waters) and May 1 through October 31 (Class 7 waters)
except that where the effluent is discharged 25 miles
or less upstream of a water intake supplying a potable
water system, the reduction to the stated value is
required year round. The stated value is not to be
exceeded in any calendar month as determined by 'the
logarithmic mean of a minimum -of five samples, nor
shaiLL more than 10* of all samples taken during any
calendar month individually exceed 400 organisms/ 100
ml. _ The -application of the- fecal coliform group
organism standards shall be limited to sewage or other
effluents containing admixtures of sewage and shall
not apply to industrial wastes except where the-
presence of sewage, fecal coliform organisms or viable
pathogenic organisms -in such wastes is known or
reasonably certain. Analysis of samples for fecal
coli form group organisms by either the multiple tube
fermentation of the .membrane filter techniques is
acceptable. •
T««al.??liform or&anisras -
100 milliliters.
"lost probable number per
Fecal coliform organisms - 200 organisms/100 ml as a
logarithmic mean measured in not less than 5 samples
in any calendar month, nor shall more than 10* of "all
samples taken during any calendar month individually
exceed 400 organisms/100 ml. (Applies only between
March 1 and October 31). ^ ,
Fecal coliform organisms - 200 organisms/100 ml as a
logarithmic mean measured in not less than 5 samples
in any calendar month, nor shall.more than 10* of all
samples taken during any calendar month individually
exceed 2000 organisms/100 ml. (Applies only between
March 1 and October 31).
Fecal coliform organisms - 1,000 organisms/100 ml*
(Applies only .between May 1 and October 31)'.
* • ' • . •' , - '
- The stated value is not to be exceeded in any
calendar_ month as determined by.the logarithmic mean
of a minimum of 5 samples, nor shall more than 10% of
all samples taken during any calendar month
individually, exceed 2,000 organisms/100 ml-v
-33-
-------
State and 1?ater Use
Mississippi24
Public Water Supply
Shellfish Harvesting
Areas
Bacteria Criteria
Fecal/coliform shall not exceed
esta d
a maximum of 4000/100 ml in any one sample
•
of* the^w SCa C°liform MPN (»°st Probable Number)
?L ten i5r.Cann0t eXC6ed U/10° m1' and not more
Recreation
Fish and Wildlife
Ephemeral Stream
Missouri25
Effluent Limitations
for Lakes & Reservoirs
°° °
°
* *•<>»• trie ' mean of
, exceed a ^^tric mean of
, nor shall more than 10* of the -
e an o t
examined during any month exceed 4000/100 ml
Discharges from vastevater treatment facilities which
receive primarily domestic vaste or from
t f0^ (POTV'S) Sha11 Unde^° ea
to conform to the following limitation:
whole hoHrge t0 lakSS and res«voirs identified as
whole body contact areas shall not contain more than
two hundred (200) fecal coliform. colonies per me
hundred (100) ml from April 1 to October 31
per^t^ ,may /aiVS °r ^-^ thlS """JSon if
permittee can demonstrate that neither health nor
y
Effluent Limitations
for Losing Stream
If the department agrees to allow a release to a
m' thS Permit Vil1 be Bitten using the
contained in. (4)(B) and (C). Discharges
?reatment facilities, 'which receive
d°mfstlc ' vaste' or from publicly-owned
rVOrk% (POTV/S) Sha11 Underg° ' treatment
to conform to the following limitation: '
more D"charfs ^° losing, streams shall not contain
peThundred
-34-
-------
State and ffater Use Bacteria Criteria
Effluent Limitations-
for Vild and Scenic
Rivers & Ozark- National
Scenic.Riverways'and
Drainage Thereto
Effluent Limitations
for all water, except
those in (1)(A)1.,2.,
3.,4.,5. and 6,
Releases from the allowed! facilities under (6)(B) 1
and 2. shall meet the following effluent ,limi at on- '
Discharges to Vild and Scenic Rivers and the
Ozarks National Scenic Riverways shall not contain
^'hundred ^ <™> ^ •«>"*>». *oloni,,
All Classified Vaters
Discharges to streams, identified as whole body
contact areas, discharges within five (5) miles
1PS11^ ?^82Ch-SrM!,and discharS*s to streams with
wherT ?h( 'I*7 °10.floV Of 2ero in metropolitan areas
where the stream is readily accessible to the public
shall not contain more than two hundred (200) colonies
per one hundred (100) ml from -April 1 to Octobef 31
The department may waive or relax this limitation if
er °r, 0Pe«tor of the wastewater treatment
can demonstrate that neither health nor water
quality will be endangered by failure to disinfect.
o- i
of
bac
-------
State and ¥ater Use Bacteria Criteria Values
Nebraska27
Primary Contact
Recreation
Secondary Contact
Recreation
Nevada28
Drinking Water Supply
(vith treatment by
disinfection only)
Aquatic Life Habitat,
Wildlife Propagation,
Agricultural Use,
Recreation, Boating,
and Esthetics
(Class A).
Drinking Water Supply
(vith treatment by
disinfection and fil-
tration only), Agri-
cultural, Aquatic
Life and Wildlife
Propagation, Recrea-
tion, Industrial and
Esthetics (Class B)
Domestic Water Supply
(following complete
treatment) Agricul-
tural, Aquatic Life,
Wildlife Propagation,
Recreation, Esthetics
and Indus tri;al
(Class C)
coliform limitations based on effluent guidelines.
of 5
i T concentr^ion, based on a minimum
6S dUr*ng any 3°-day Period' nust not
*meti:ic mean of 200/100 ml nor may more
Same as Class A.
The more stringent of the following apply:
(1) The fecal coliform concentration must not exceed
ofg?o?!l m?an °f 1000/10° «1 "or may more than 20%
o£ total samples exceed 2400/100 ml.
(2) The annual geometric mean of fecal coliform
mUSt u™' eXCeed that Characteristic of
nnmh tions by more than 200/100 ml nor may the
number of fecal coliform in a single sample exceed
400/100 ml riStlC natUral conditions by nrore than
(3) The fecal coliform concentration, based on a
minimum of 5 samples ' during any 30-day period? mus?
-36-
-------
State and Vater Use Bacteria Criteria Values
Control Points
«« Jh ' ,nr gTet"C mean °f 200/1°0 -"I,,nor may
more than 10* of total samples during any 30-day
period exceed 400/100. ml. This is applicable only to
those vaters used for primary contact recreation. '
Fecal coliform varies depending on specified location.
Nev Hampshire29
Vater Supply (after
disinfection) Class A
Not more than 50 coliforms/100 ml unless naturally
occurring.
HaMr»r '/J ? m°re thSn 24° colif°rms/100 ml in fresh vater,
Habitat, and Water unless naturally occurring. Not more than 70
Supply (after adequate coliforms/100 ml in vaterS used for growtn* or takin*
treatment) Class B of shellfish for human consumption! *
nH, 1Pi?Jng.f«and1 N?< t0 exceed "'average value of '1000 colifonrs/100
Industrial Vater Supply ml in any group of samples, nor shall anysingle -
SC . sample exceed 2500 coliforms/100 ml except when such
vaters are subject to overflow from a 'combined sever
: system or as naturally occurs. ,
Nev Jersey30
Shellfish Vaters
SC Vaters (within 1500
feet of shoreline)
FV2 (except as below),
SE1, and SC (1500 feet
to 3 miles from the
shoreline)
Bacterial Indicators shall not exceed, in all
shellfish waters, the standard for approved shellfish
waters as established by the National Shellfish
Sanitation 'Program as. set forth in its current manual
of operations. .
Fecal coliform levels-shall not exceed a geometric
average of 50/100 ml.
Fecal coliform levels shall not exceed a geometric
average of 200/100 ml nor should more than 10* of the
«•«••- -amples taken'during any 30-day period exceed
ml. . • ' • • ,
to the
Delaware River, between
Rancocas Creek and Big
Timber Creek inclusive
SE2
co:4fo™ ^els shall not exceed a geometric
average of 770/100 ml.
'
SE3
Fecal coliform levels shall not exceed a geomet>^>
average of 770/100 ml.
Fecal coliform levels shall riot exceed a geometric
average of 1500/100 ml.
-37-
-------
State and Vater Use Bacteria Criteria Values.
fha11. b6 obtained « sufficient' frequencies
and at locations during periods which will wrmil
valid interpretation of laboratory analyses C ,
guideline and -for .the purpose of thWriJuT^ioni ?
minimum of five samples taken ove? a 30-day ne?iod
should be collected, however, the number of samples
1°cations vill be determined
Mains tern Delaware River
and Delaware! Bay
z°nes lc> 1D 1E '
Zone 2
Zones 3, 4'
Zone 5
Zone 6
New Mexico31
Irrigation or
irrigation Storage
Primary Contact Rec.
locati°°
Fecal coliforms: Maximum geometric average not to
Sioe:d R2S0/1??7 «mi abor ?-M- ii7-81- and ^o/ioo. ml°
below R M. 117.81. Samples shall be taken at such
locatlon as "'
Fecal coliforms: Maximum geometric average of 770/100
S«rl P f •*haJ1 be taken at such f^quency and
location as to permit valid data interpretation.
Fecal coliformss Maximum geometric average of 770/100
ml from R.M 78.8 to 59 5, and of ZOO/lOo'ml from R^M
59.5 to 48.2. Samples shall be taken at "such
M°St Probable Nuraber not to exceed
h h Service's shellfish standards in
shellfish areas.
sheil°nthly logarithmic mean or fe<=al coliform bacteria
The monthly logarithmic mean of fecal coliform bacteria
200/lo°
n°
See New Mexico Water Quality Standards for Interstate
and Intrastate Streams for site-specific standards.
-38-
-------
State and Mater Use Bacteria Criteria Values
Nev York32
Fresh Surface Vaters
Class AA
Class A
Class B
Class C
Saline Surface Waters
Class SA '• '
Class SB
Class SC
Special Classifications
Class A - Special
Class I
The monthly median coliform value for 100.ml of sample
shall not exceed 50. from a minimum of five
examinations and provided that not more than 20* of
the samples shall exceed a coliform value of 240 for
100,ml of sample. •
The monthly median coliform
shall not exceed 5,000
examinations and provided
the samples shall exceed
for 100 ml of . sample and
fecal coliform value for
exceed 200 from a minimum of
value for 100 ml of sample
from a minimum, of five
that not more than 20* of
a coliform value of 20,000
the monthly geometric mean
100 ml of sample shall not
five examinations.
The monthly median coliform value for 100 ml of sample
shall not exceed- 2,400 from a minimum of five
examinations, and provided that . not more than 20* of
the samples shall exceed a coliform value of 5 000 ^or
100 ml of sample and the monthly geometric mean fecal
colaform value for 100 ml of sample shall not exceed
/uu from a minimum of five examinations. ' This
standard shall be met during all periods vhen
disinfection is practiced.
The monthly geometric mean total coliform value for
100 ml of sample shall not exceed 10,000 and the
monthly geometric mean fecal coliform value for 100 ml
of sample shall not exceed 2,000 from a minimum of
five examinations. This standard shall hie met during
all periods vhen disinfection is.practiced.
The median MPN value in any series of samples
representative of vaters in the shellfish growing area
shall not be in excess of 70,per 100 ml.
Same as Class B above.
.Same as Class C above.
geometric mean of not
than five samples, taken
*??'
GA
fecal coliform. -
Same as Class C above.
Coliform and/or pathogenic organisms shall not be
discharged in amounts sufficient to render fresh ground
vaters detrimental to public health, safety or welfare.
-39-
-------
State and Vater If.s. Bacteria_Criteria
Values
North Carolina33
Fresh Surface Vaters
consecutive
"' SSS" ' Se°»e<"= »"" of
durin " "«
;
the
"andard,
Class VS-1
Class B
. c
results, the MPN s n,K- j?f • controversy over
used as/the referenJ^lhod"1""0" teChni"Ue "i11 »'
Total coliforms' not to exceed 50/tnn mi
.ean of
Tidal Salt Vaters
•=£!
Class SA
Fecal coliform
14/100 ml and
-40-
group not to exceed a medium MF of
not more than. 10* of the samples shall
-------
State and ¥ater Use
Bacteria Criteria Values
Class SB
North Dakota
34
exceed an MF count of 43/100 ml in those areas most
probably exposed to fecal contamination -during the
most unfavorable. hydrographic and pollution conditions.
nn/nn iu,, n0t t0 exceed geometric mean of
200/100 ml (MF . count) based on at least five
consecutive samples examined during any 30-day period
and not to exceed 400/100 ml in more than 20% of the
samples examined during such period; standards are not
applicable during or immediately following periods of
rainfall, (applicable only during the months of May
through September; during other months the coliform
organism standard for Class "SC" waters shall apply)
Classes I.IA.II,,S III 200 fecal coliforms per 100 ml. This standard shall
apply only during the recreation' season, May 1, to
September 30. . • . . •
Ohio35
All Lake Erie Uses
All Ohio.River Uses
Bathing Vaters
Geometric mean fecal coliform content (either MPN or
MF), based on not less than 5 samples within a 30-day
period shall not exceed 200 per 100 ml and shall not
exceed 400. per 100 ml in more than 107. of the samples
taken during any 30-day period. .
Maximum allowable level of fecal coliform for primary
contact recreation:
C°ntent (either MPN or MF count) shall not exceed
200 per 100 ml. as a monthly geometric mean based on
not less than 5 samples per month; nor exceed' 400 per
100 ml in more than 10* of all samples taken during
month; these. limits are applicable to waters
designated for recreational use during the recreation
season (May through October).
allowable level of
coliform
fecal coliform for other
Maximum
uses:
Fecal • coliform content (either MPN or MF count)
shall not exceed 2000 per 100 ml as a monthly
geometric mean based on not less than 5 samples per
month.
Geometric mean fecal coliform content (either MPN or
MF), based on not less than 5 samples wi'thin a 30-day
period shall not exceed 200 per 100 ml and shall not
-41-
-------
State and Water Use Bacteria Criteria Values
Primary Contact
Secondary Contact
exceed 400 per 100 ml in more than 10 per cent of the
samples taken during any 30-day period.
coliforra co"tent (either HPN or
orod
-------
State and Water Use
Bacteria Criteria Values
Basin, South Coast
Basin, Rogue Basin,
Willamette Basin, Sandy
Basin, Hood Basin,
Deschutes Basin, John
Day Basin, Umatilla
Basin, Valla Walla
Basin, Grande Ronde
Basin, Malheur River
Basin, Owyhee Basin,
and Goose and Summer
Lakes Basin
(A) Marine vaters and estuarine shellfish groving
vaters: A fecal coliform median concentration of 14
organisms per 100 milliliters, vith not more .than 10
percent of the samples exceeding 43 organisms per 100
ml. •'••..-.
(B) Estuarine vaters other than shellfish groving
vaters: A log mean of 200 fecal coliform per 100
railliliters based on a minimum of 5 samples in a
30Tday period vith no more than 10 percent of the
samples in the 30-day .period exceeding 400 per 100 ml.
All
Bacterial pollution or other conditions deleterious to
vaters used for domestic purposes, livestock vatering,
irrigation, bathing or shellfish propagation, or
otherwise injurious to public health shall not be
alloyed. '
Pennsylvania
All .
38
During the svimming season * (May 1 through1
September 30), the fecal coliform level shall not
exceed a geometric mean of
five consecutive samples
different days; for the
200 per 100 ml based on
each sample collected on
remainder of the year, the
fecal coliform level shall not 'exceed a geometric mean,
of 2000 per 100 ml based on, five consecutive samples
collected on different days. ,
Bac- Not more than 5,000 coliforms/100 ml as a
monthly average value, nor more than this number in
more than 20* of the samples collected during any
month, nor more than 20,000/100 ml in more than 5% of
the samples.
Bac- Not more than 5,000
monthly geometric mean. •-'
coliforms/100 ml as a
-^ Maximum geometric mean of 770 fecal
coliforms/100 ml; samples shall be - taken at a
frequency and location to permit valid interpretation.
Bacc
The
consecutive, samples
of 200/100 ml.
fecal' coliform density
in
f i ve
shall not exceed a geometric mean
-43-
-------
State and ¥ater Use Bacteria Criteria Value.
Rhode Island39
Fresh Waters
Class A
Class B
Classes C and D
Sea Vaters
Class SA
Class SB
Class SC
SO?"
Fecal coliform bacteria/100 ml: Not to ******
median value of 20 and not more- than 10? of thi
samples shall exceed a value of. 200; *
exceed
l
Fecal coliform bacteria/100 ml: Not to exceed a
median value of 200 and not more than 202^ rh!
samples shall ^exceed a value of 500.
! N°ne in such Concentrations
these aasses ^ sPecifi"Hv assigned to
Fecal coliform bacteria/100 ml: Not applicable.
t0 ^«ed a median MPN
di ri exceed r
dilution or 330 for a 3- tube decimal dilution'
Fecal coliform bacteria/100 ml:
sm±in ^r °f i5 Snd n0t m
samples shall exceed a value of 50.
Not to exceed *
than lofof he
mis Not to exceed a median
«,>,., n j~~7 7— not more than 10* of the samples
shall exceed a value of 2300. ,
Fecal coliform bacteria/100 ml: Not to exceed, a
i , ,, ' 2nd not more than 10£ of the
samples shall exceed a value of 500.
Coliform bacteria/100 ml: None in such concentrations
this class ^^ ^ ""^ SPecifi<~^ assigned to
*
Guide, pending further research.
-44-
-------
State and Water Use
Bacteria Criteria
40
South Carolina
Class AA
Classes A-Trout and A
Classes B-Trout arid B
.Class SAA
Class SA
Class SB
Class SC
South Dakota^1
Domestic Water Supply
Fecal coliform: Natural conditions vill be
Immersion Recreation
Waters •
mh H ,- -e«-o
a™ ' fed, oirflve consecutive, samples durinz
any 30-day period; nor shall more than 10* of hf
total samples during any 30-day period .exceed, 400/100
of
«nv n ^ conse^tive samples during
any 30-day period; nor shall more than 202 of thf
samples examined, during such period -exceed 2000/100 ml
ilibe ma ,, ' aUra conditions
vill be maintained and protected as feasible,
the Department's statutory authority. '
' '
Fecal coliform: Same as Class A.
Fecal coliform: Same as Class B.
5 ooo ^
5,000_ per 100
a minimum of 5
not exceed an MPN or MF ^
ters as a geometric mean based on
samples obtained during
Fecal coliform organisms from May 1 to September 30
llnni"?1' SXCeed a concentration of 200 per 100
milliliters as_ a geometric mean based on a minimum 'of
'»nv in !S obtained ^ring. separate 24-hour periods for.
any 30-day period, and they may not exceed this value
2° PerCent °f the samPles examined in
ay Pe^od. They may not, exceed 40C p»r 100
ters in any one sample from May 1 to September
-45-
-------
State and gater Use Bacteria Criteria Values
Limited Contact
Recreation Waters
Fecal coliform -organisms from May I to September 30
!nn??J * a concentration of 1,000 per 100
milliliters ^as a geometric mean based on a minimum of
Sa?B T °bCained dUrlng Separate 24-h0^ P«?od for
mo^I ^ ^n^ ^ they may n0t «W this value
30 dav^npH°rf "'S^' °f the SampleS 6Xamined *"
a ? They ^ n0t SXceed 2'000 P^ 100
in any one sample from May 1 to September
Tennessee
Domestic Water Supply The concentration of. the fecal coliform group shall
not exceed 1,000 per 100 ml as the geometric mean
on a minimum of 10 samples collected from a
sampling site over a period of not more than 30
consecutive days vith individual samples being
collected at intervals of not less than 12 .hours. For
of determining the geometric mean,
having a fecal coliform group
than 1 per 100 ml shall be
Tn aHrHf r~ u ° - concentration of 1 per 100 ml.
SOUD in • !• Concentration of the fecal coliform
S ?«„ , any lndlvidual sample shall not exceed
OQJ^ ' i in «*T
Fish And Aquatic Life Same as above.
Recreation
Texas^J
General Criteria
The concentration of the fecal coliform group shall
not exceed 200 per 100 ml as the geometric mean based
on a^ minimum of 10 samples collected from a given
sampling- site over a period of not more thin 30
consecutive days - vith individual samples being
collected .at intervals of not less than 12 hours. For
°f dfterminin.S the geometric mean,
havins 'tt fecal coliform group
« -' u SS than X P« 10° ml sh^ll be
considered as having a concentration of 1 per 100 ml.
in addition, . the concentration of the fecal coliform
group in any individual sample shall not exceed 1,000
per 100 ml. Vater areas in the vicinity of domestic
InSJehatep t«atment Plant outfalls are not considered
suitable for body contact recreational purposes.
A fecal coliform goal of not more than. 2,000 colon-ies
per 100 ml shall apply to all vater bodies not
specifically listed in Appendix A of §333.21 of the
Texas Vater Quality Standards (relating to Appendices
~
-46-
-------
State and Water Use
Bacteria Criteria Values •
™"^°gical Criteri? a" ^r .. fecal
Contact Recreation
Waters
shall"°< exceed 20o' colonies
• r -
collected over not more than 30 days.
Fecal coliform content shall
equal or exceed 400
SB
Noncontact Recreation
Waters
n0t exceed 20° colonies
as a geometric mean based on a
representative sampling of not less than five samoles
collected over not more than 30 days. samples
Fecal coliform cpnt.ent shall not equal or exceed 400
"
Shellfish Waters
A 1,000-foot .buffer zone, measured from the shoreline
a ordinary high tide, is established for all bay and
Sft I^H6"' eXC6Pt th°Se "ntained in river 'or
coastal basins as .defined" in §333.13 of the Tevas
tandards ("lating' to Classification'^
., i FeCal colif°™ content in buffer
shall not exceed 200 colonies per 100 ml as a
not mT °fhn0t ^SS than fiVe Sa^les °oliec?ed
not more than 30 .days or equal or exceed 400
30°H ^ * 5°^ than l°* °f a" samples '
30-day period.
Water Bodies listed
in Appendix A of the
Texas Water Quality
Standards
oliforra .concentration in bay and gulf
°f buffer 20nes' shall not exceed 14
s ^ ml, with not more than 10* of all
samples exceeding 43, colonies per 100 ml.
Fecal coliform content varies depending on water bodv
ana its uses.
-47-
-------
State and Water Use
Utah44
Domestic Source
Class 1C
Recreation & Aesthetics
Class 2A
Class 2B
Bacteria Criteria
(30-day geometric mean)
Maximum total coliforms: 5,000/100 ml
Maximum fecal coliforms:., 2,000/100 ml
Maximum total coliforms: 1,000/100 ml
Maximum fecal coliforms: 200/100 ml
Maximum total coliforms: 5,000/100 ml
Maximum fecal coliforms: 200/100 ml
Vermont
Class A Waters
Class B Waters
Class C Waters
Fecal coliform not to exceed 20 organisms/100 ml or
background conditions whichever is lover. None
attributable to the discharge of vastes.
Fecal coliform not to exceed 200 organisms/100 ml
SVP ^ Sec«tary may, by permit condition,
vaaye compliance vith the fecal coliform criterion
during all or any portion of the period between
October 31st and April 1st, provided that a health
hazard is not created. The Secretary shall provide
written notice to the Vermont Department of Health
iri°f *?,*:LssuinS a Permit waiving compliance with the
fecal coliform criterion.
Same as Class B above.
Virginia46
VR680-21.02.1
WATERS
FECAL COLIPORM BACTERIA - SHELLFISH
In all open ocean or estuarine waters capable of
propagating shellfish or in specific areas where
PUS f ?rJ4 6aSe? Private shellfish beds are present,
and including those waters .on which condemnation or
restriction classifications are established by the
State Department of Health, the following standard for
fecal coliform bacteria shall apply:
The _median fecal coliform value for a sampling
station shall not exceed an MPN (most probable
number) of 14 per 100 milliliters. Not more than
IQZ of samples shall exceed an MPN of 43 for a
5-tube, 3-dilution test or 49 for a 3-tube,
3-dilution test. . •
VR680-21-02.2 FECAL COLIFORM BACTERIA - OTHER WATERS
-48-
-------
State and .Water Use
Bacteria Criteria Values
A. General Requirements
In a^Lf"rfaCe vaters- except shellfish vaters
certain vaters addressed in B. '.below, the
coliform bacteria shall not exceed a
geometric _»e«n of 200 fecal coliform bacteria per
100 ml of, water for two or more samples over a
nf innn Peri?™ °f a fecal colif°™ bacteria level
of 1000 per 100 ml at any time.
B, Disinfection Policy . ,
In waters that receive sewage discharge, all
reasonable, beneficial, seasonal • uses in these
vaters .shall , be protected. The Board's
.Disinfection Policy applies to these vaters.
1. Sevage Discharges in Relation to Water Supply
Intakes
Discharges located within fifteen miles
upstream or one tidal cycle downstream of a
vater supply intake shall, be disinfected in
order to achieve a fecal coliform geometric
9nn Jnn ^6 effluent e<^al to or less
200.per 100 milliliters.
2. Sewage Discharges.into Shellfish Waters
When sewage discharges are permitted to or
within five miles upstream of shellfish
vaters, they ' shall be disinfected in- order to
achieve a fecal coliform geometric mean value
in the effluent equal to or less than 200 per
100 milliliters.
3. Sevage Discharges into Other Waters
Sewage discharges into other^waters shall be
adequately treated and disinfected as
necessary to protect all the reasonable
beneficial seasonal uses in these waters.
Generally, these discharges shall achieve a
fecal coliform geometric mean value in the
effluent equal -to or less than 200 per 100
milliliters. However, the Board, . with the
advice , of the State Department of Health, may
determine that reduced disinfection of a
discharge is appropriate on ,a seasonal or
year-round basis. ' In making such a
determination, the Board shall consider the
.actual and potential beneficial uses of these
vaters and the seasonal nature of those uses-
Such determinations will be made during the •
-49-r . -'••'..-
-------
State and Vater Use Bacteria Criteria Values.
process of approving, issuing, or reissuing
the discharge permit and, shall be in
conformance vith a Board approved site
specific beneficial use-attainability analysis
performed by the permittee. When making a
case-by-case determination concerning the
appropriate level of disinfection for sewage
discharges into these waters, the Board shall
provide a 45-day public notice period and
opportunity for a public hearing.
Washington
47
Class AA(Extraordinary) (A) Freshwater - Fecal coliform organisms shall not
exceed a geometric mean value of 50 organisms/100 ml,
vith not more than 10 percent of samples exceeding 100
organisms/100 ml.
(B) Marine Water - Fecal coliform organisms shall not
exceed a geometric mean value of 14 organisms/100 ml,
vith not more than 10 percent of samples exceeding 43
organisms/100 ml.
Class A (Excellent)
Class B (Good)
Class C (Fair)
Lake Class
(A) Freshwater - Fecal coliform organisms shall not
exceed a geometric mean value of 100 organisms/100 ml,
vith not more than 10 percent of samples exceeding 200
organisms/100 ml.
(B) Marine Water - Fecal coliform organisms shall not
exceed a geometric mean value of 14 organisms/100 ml,
vith not; more than 10 percent of samples exceeding 43
organisms/100 ml.
(A) Freshwater - Fecal coliform organisms shall not
exceed a geometric mean value of 200 organisms/100 ml,
with not more than 10 percent of samples exceeding 4QO
organisms/100 ml.
(B) Marine' Vater - Fecal coliform organisms shall not
exceed a median value of 100 organisms/100 ml, with-
not -more than 10 percent of .samples exceeding 200
organisms/100'ml. .
Marine Water - Fecal coliform organisms shall not
exceed a geometric mean value of 200 organisms/100 ml,
with not more than 10 percent of samples exceeding 400
organisms/100 ml.
Lakes and impoundments - Fecal coliform organisms
shall not exceed a geometric mean value of 50
organisms/100 ml, with not more than 10 percent of
samples exceeding 100 organisms/100 ml.
-50-
-------
State and Water Use
Bacteria Criteria Values
Vest Virginia48
Categories A & C
Ohio River
Category C
Fecal coliform content (either MPN or MF count) shall
not exceed 200 per 100 ml as a 30-day geometric mean
based on not less than 5 samples during any 30-day
period nor exceed 400 per 100 ml in more than 10* of
all samples during any 30-day period.
For the non-recreational season November through April
only, the maximum allowable level of fecal coliform
Jnnn/JSn 0h,ia'RiVer (either MPF'or MF> shall not exceed
2000/100 ml as a monthly geometric meanJbased on not
less'than 5 samples per month.
Wisconsin
Recreational Use
Vyoming50
Class IV Streams and
at all Public Water
Supply Intakes
The membrane filter fecal coliform count shall not
exceed 200 per 100 ml as a geometric mean based on-not-
less than 5 samples per month, nor exceed 400 per 100
ml in more than 10 percent of all samples during any
month. • • '
The following are variances listed in .the Wisconsin'
Water Quality Standards which are applicable to
certain waters of southeast district: '.
(a) The membrane- filter fecal coliform content shall
not exceed 1,000 per 100 ml as a monthly geometric
mean based on not less than 5 samples per month nor
exceed 2,000 per 100 ml in more than 10* of all
samples during any month.
-(b) The membrane
not exceed 1,000
* t - - — — — — — *«w *A 4i»v*« W**-4» T &^
mean based on not less than 5 samples per month.
filter fecal coliform count shall
per 100 ml as a monthly geometric
(See the Wisconsin Water Quality Standards for the
specific water segments each variance applies to.)
(a) During the entire year wastes.attributable to or
influenced by the activities of man shall not be ,
present in amounts which will cause fecal coliform
concentrations to exceed a geometric mean of 200 fecal
coliform groups per 100 milliliters (based on a.
minimum of not less than 5 samples obtained during
separate 24 hour periods for any 30 day period), nor
shall ten percent of the samples exceed 400 groups per
100 milliliters during any 30,day period.
-51-
-------
State and Water Use Bacteria Criteria Values
Full Body Contact
Recreation
Secondary Contact
Recreation
51
American Samoa
All Fresh Surface
Water, Embayments,
Open Coastal Vater
and Oceanic Waters
(b) During the recreation season (May 1, through
September 30) vastes attributable to or influenced by
vhich v?ll " °f fn fha11 n0t ~be Present in amounts-
which will cause fecal .coliform concentrations to
?an °f 2°°fecai "I*"™ *rou s
(based on a minimum of not less
nernH fsamples °^ained during separate 24 hour
periods for any 30 day period), nor shall ten percent
of the samples exceed 400 groups per 100 milliliters
during any 30 day period in the following vaJers
full
ll^/r^r11* sP?cific vater bodies can be found
listed in the Wyoming Water Quality Standards.)
(c) All surface waters not described in (a) or (b)
above shall be considered suitable for secondary body
recreation and the following limits shall
During the recreation season (Hay 1, through
30) fecal coliform concentrations
... to or influenced by the activities of man
shall not exceed a geometric mean of 000 Leal
coliform groups per 100 milliliters' (based on a
minimum of 5 samples obtained during separate 24 hour
Jf the sfTlerL day Peri°d)' nor sha11 10 Percent
j _» c\* ** f \j\j\j groups P6ir iOO miH11 i t CTS
during any 30 day period.
The number of fecal coliform bacteria shall not
exceed a geometric mean of 100 per 100 milliliters nor
exceed 200/100 milliliters in mSre than 10% of
samples. In areas where shellfish are collected,
SiilfS"1.! """"^j?03 sh*ll comply with U.S. Public
Health Service Shellfish Standards, in its latest
District of Columbia52
30
usssss: o
(Public Water Supply),
and E (Industrial Water
Supply)
-52-
-------
State and ffater Use
Guam53
M-l, S-l
M-2, S-2
M-3, S-3
Limitations for
Discharges to;
G-2
G-3a
G-3b .
Bacteria Criteria Values
Concentrations' of total coliform bacteria at any point
shall not -,be increased from natural conditions at any
time.
The total coliform bacteria count shall not exceed an
arithmetic mean of 70 per 100 ml during any 30-day
period nor shall any sample exceed 400 per 100 ml' at
any time.
The total coliform bacteria count shall not exceed an
arithmetic, mean of ,200 per 100 ml during any 30-day
period nor shall any sample exceed 400 per 100 ml at
any time.
To determine compliance vith the above microbiological
requirements where a ' "30-day period" is specified, a
minimum of four '.samples shall be- collected at
approximately equal intervals.
NOTE: ,_ Where shellfish are collected for human
consumption, the microbiological standard for M-l
waters shall apply.
Fecal coliform: 200/100 .ml
Fecal coliform: Concentrations to be established on a
case-by-case basis by the Agency.
Fecal coliform: 40/100 ml daily average
Mariana Islands
Classes AA and 1
54
Classes A and 2
The median total coliform content shall not exceed 70
per ml during any 30-day'period nor shall any sample
exceed 230 per ml at any time. (There must have been
a misprint, in the .reference; it should be "per 100
ml".)
Fecal coliform content shall not exceed an arithmetic
mean of 200 per 100 ml during any 30-day period nor
shall any sample exceed 400 per 100 .ml at any time. "
Tp determine compliance with the above standards where"
a "30-day period" is specified, a ; minimum of 10
samples shall be collected at approximately ,equal
intervals.
-53-
-------
State and Vater Use
Puerto Rico55
Class SA
Class SB
Class SC
Class SD
Class SE
Trust Territory56
Classes AA and 1
Classes A, B, and 2
Bacteria Criteria Values
Colifor^: Shall „„< be altered .^ by ^
•a
samples shall exceed 230 colonies/100 ml. .
The coliform geometric mean of a serie^ nf
waters taken sequentially
given instance h- n
;sha11
by
«unt shall not
nor shall „< , any 10 co^ecutive samples.
nor shall any single sample exceed 230 per 100 ml.
Fecal coliform content shall not exceed an arithmetic
norVll PSr J00 ml f°r any 10 '""secutive samples
nor shall any single sample exceed'400 per 100 ml.
In areas vhere shellfish are harvested for ' human
-for AA-
-54-
-------
State and Water Use
Virgin Islands57
Class A
Class B
Class C
Bacteria Criteria Values
Existing natural conditions shall not be changed.
Bacteria: . Shall not exceed a geometric (log) mean of
.70 fecal coliforms per 100 ml by MF or MPN count.
Bacteria: Shall not exceed a geometric (log) mean of
200 fecal coliforins per 200 ml by MF of MPN count. ,
-55-
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